Low annoying whistling sound

I seem to have a low and very annoying sound coming from my PC I think or its my HDTV I am not sure I have my TV connected to my HD7850 and its like Morse code if I could try to describe it. I have read tons of pages sayings it coil whine from the card but I've always got it from all my ATI/AMD cards all the way back from my HD5770 1GB games play fine everything is fine but I'd love to get rid of it if I can does anyone else have this issue.

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